Is this plush hybrid responsive, or does it feel slow and sinking?

It leans cushioned rather than springy, scoring 7.1 out of 10 for responsiveness, which is expected from a deep plush build. Foam recovery takes up to about 3.3 seconds because the thick memory foam springs back slowly. The 2550 pocketed coils underneath keep it from feeling stuck, so repositioning is not a struggle, but the character is contour first, bounce second. If you want fast, buoyant push-back, a firmer model suits better.